ZHCSFM4B september 2016 – december 2021 UCC21521
PRODUCTION DATA
Chanel B has the same current requirements as Channel A, Therefore, a VDDB capacitor (Shown as CVDD in Figure 9-1) is needed. In this example with a bootstrap configuration, the VDDB capacitor will also supply current for VDDA through the bootstrap diode. A 50-V, 10-μF MLCC and a 50-V, 220-nF MLCC are chosen for CVDD. If the bias power supply output is a relatively long distance from the VDDB pin, a tantalum or electrolytic capacitor, with a value over 10 μF, should be used in parallel with CVDD.